防止DDOS攻击

Question

我想我受到了DDOS攻击，我在我的access.log上发现了以下几行代码：

41.214.156.122 - - [21/Mar/2016:06:01:40 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
105.154.196.147 - - [21/Mar/2016:06:01:40 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
105.154.196.147 - - [21/Mar/2016:06:01:40 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
105.154.196.147 - - [21/Mar/2016:06:01:44 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
41.143.48.239 - - [21/Mar/2016:06:01:43 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
105.154.196.147 - - [21/Mar/2016:06:01:43 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
105.154.196.147 - - [21/Mar/2016:06:01:44 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
41.214.156.122 - - [21/Mar/2016:06:01:44 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
41.143.48.239 - - [21/Mar/2016:06:01:44 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
105.154.196.147 - - [21/Mar/2016:06:01:45 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
105.154.196.147 - - [21/Mar/2016:06:01:45 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
41.143.48.239 - - [21/Mar/2016:06:01:46 +0300] "POST / HTTP/1.1" 200 41765 "-" "Dalvik/2.1.0 (Linux; U; Android 5.1.1; SM-J700F Build/LMY48B)"
::1 - - [21/Mar/2016:06:01:52 +0300] "OPTIONS * HTTP/1.0" 200 110 "-" "Apache/2.4.12 (Ubuntu) (internal dummy connection)"
::1 - - [21/Mar/2016:06:01:53 +0300] "OPTIONS * HTTP/1.0" 200 110 "-" "Apache/2.4.12 (Ubuntu) (internal dummy connection)"

我怎样才能防止这类攻击？

谢谢

Answer 1

根据您是否正在运行服务器，有不同的选项可以帮助您阻止if。现在有一个很好的教程来阻止is 这里。

你也可以：

1. 请参见http://bodhizazen.com/Tutorials/iptables#Additional_提示 (向下滚动到“使用iptables拒绝/阻止失败连接”)。
2. 保护服务器的安全，根据服务器的不同而有所不同，请参阅- http://bodhizazen.com/Tutorials/SSH_安全性
3. 使用诸如fail2ban之类的服务。

您可以采取多种措施来提高安全性(这是一个简短的列表)，.See任何不同的安全指南都可以获得更多信息

https://wiki.ubuntu.com/BasicSecurity

https://help.ubuntu.com/lts/serverguide/security.html

部分来源于菩提. answer对我的帖子这里的回答。